知恵の時代
Subtitle: jidai o hiraita hachinin no taiken ni manabu
By: [henchosha JDC Henshūbu]
Series: Today & tomorrow series -- 2
Publisher: JDC
Published: 1990
Place of publication: Ōsaka-shi
Language: jpn
Number of pages: 165
Other titles: Chie no jidai